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35
hvor den gaar over i Rachis og er stærkt dreiet, Fig. 27, a,
overalt tæt besat med Zooider, der nedover Stilken samle
sig i Rækker paa Ventral- og Dorsalfladen, men blive alt
sparsommere og sparsommere, saa at de paa den bulbøse
Del staa ganske enkeltvis.
Rachis er bægerformet, rund og saa fordreiet, at det
ikke er muligt at se, hvor den ender. Den er 110""" i
Omkreds, 23""" høi, 32""" bred og bærer 26 Polyper, som
indtage saavel Dorsal- som Ventralfladen, der egentlig er
imaginær; thi Rachis danner en opad stærkt udvidet Klump,
hvorpaa Polyperne sidde tilsyneladende i Kredse, den ene
indenfor den anden. Imidlertid kan Polyperne lægges
saaledes ud fra hverandre, at en bilateral Symetri kan
fremstilles; men den bliver jo altid ufuldkommen og maa kun
betragtes som Rester af en fordums saadan.
Omtrent paa Midten af den næsten horizontalt
liggende Rygside staa 3 Polyper i Rad. hvoraf den forreste,
Fig. 27. 1*, er Terminalpolypen, hvis Krop er 25""" lang og
9m"’ bred ved Grunden; Tentaklerne 45’"’" lange; den anden
er lidt større, Fig. 27. 1; men den tredie, bagerste, er den
største; dens Krop er 35’"’" lang, 10""" bred; Tentaklerne
45""" lange. Denne Række danner de central-dorsale
Polyper, ihvorvel de ere skudte noget til Siden paa Grund
af Fordreiningen af Rachis.
Til venstre Side af Centralpolyperne staa 3 omtrent
lige lange Polvper i en lidt skjalv Række, Fig. 27, 2. 2, 2;
Kroppen er 35""" lang, 7’"’" bred; Tentaklerne 40""" lange.
Den forreste af disse 3 dorsal-laterale Polyper udspringer
egentlig fra Ventralfladen. Udenfor dem sees 5, omtrent
lige store Polyper, der staa i en Halvkreds og maa
betragtes som de egentlige laterale Polyper, Fig. 27, 3, 3, 3, 3. 3;
Kroppen er 50’"*" lang, 10""" bred; Tentaklerne 65"""lange.
Til liøire Side, der er større end venstre, staa ved
Siden af Centralpolyperne 4 lige store Polyper i en næsten
lige Linie; Kroppen er 35""" lang, 7""" bred; Tentaklerne
45’"’" lange, Fig. 27, 4, 4, 4, 4; udenfor dem staa atter 4
lige store Polyper i en lidt skjæv Række, Fig. 27. 5, 5, 5,
5; Kroppen 33’"’" lang, 7""" bred; Tentaklerne 40"’"’ lange.
Til Siden af disse staa 2 Polyper, Fig. 27, 6, 6, af hvilke
den ene er lige stor som de sidst omtalte 4, imedens den
anden, der staar ganske nær den yderste Række, er kun
22’"’" lang, 4""" bred med 25""" lange Tentakler. Disse 10
Polyper, som repræsentere de dorsal-laterale. omgives af 5
store, laterale Polyper, Fig. 27, 7, 7, 7, 7, 7, stillede i en
Halvkreds, der slutter sig ganske til de laterale Polyper
paa venstre Side. hvorved den ydre Polypkreds dannes,
som kun paa Ventralfladen er yderst lidt afbrudt, Fig. 27, b.
Af alle de tidligere beskrevne Former er der ingen,
broad at the point where it passes over into the rachis,
and it is strongly twisted (fig. 27, a). It is, everywhere,
closely beset with zooids, which, down along the stem, are
collected in series on the ventral and dorsal surfaces, but
they become more and more sparingly placed, so that, finally,
on the bulbous part, they are placed quite singly.
The rachis is chalice-formed, and round, and is so
much twisted, that it is impossible to detect where it
terminates. It is 110mra in circumference, and 23""" high; it’s
breadth is 32"""; and it carries 26 polyps, which occupy
both the dorsal and ventral surfaces; the latter surface
is, however, only imaginary, because, the rachis forms an
upwards, strongly-dilated lump, upon which the polyps,
apparently, are seated in rings, the one inside the other.
But, the polyps may, however, be separated apart from
each other, and a bilateral arrangement thus presented; it
is, however, always incomplete, and can only be considered,
as the remains of an earlier bilateral arrangement.
At about the middle of the nearly horizontally placed
dorsal side, 3 polyps are placed in a series, of which, the
anterior one (fig. 27, 1*), is the terminal polyp; the body
of this one, is 25""" long, and 9""" broad at the base, and it’s
tentacles are 45""" in length. The second polyp is a little
larger (fig. 27, 1); but the third (posterior) one is the
largest. It’s body is 35""" long and 10""" broad, and the
tentacles are 45ram long. This series forms the
centro-dorsal polyps, although, they are somewhat pushed aside
in consequence of the twisting of the rachis.
To the left side of the central polyps, 3 nearly
uniformly long polyps are placed in a somewhat crooked
series (fig. 27, 2, 2, 2). Their body is 35""" long, and the
breadth is 7nm, whilst the tentacles are 40""" long. The
anterior one of these dorso-lateral polyps, originates, really,
in the ventral surface. Outside these, 5 nearly uniformly
large polyps are observed, situated in a semicircle, and may
be considered to be, the real lateral polyps (fig. 27,3, 3,3,3,3).
Their body is 50""" long, and 10""" broad, and the
tentacles are 65""" long.
On the right side; which is larger than the left one;
4 polyps of uniform size are situated in an almost straight
line, alongside the central polyps. Their body is 35’"’"
long and 7mm broad, and the tentacles are 45""" long (fig.
27, 4, 4, 4, 4). Outside these, there is placed, still
other 4 polyps of uniform size, in a slightly crooked series
(fig. 27, 5, 5, 5, 5). Their body is 33""" long, and 7"""
broad, and the tentacles are 40""" long; and alongside of
these, again, 2 polyps are situated (fig. 27, 6, 6), of which,
the one is similar in size to the 4 polyps last spoken of,
whilst, the other, which is placed near the outer series, is
only 22fflm long, and 4""" broad, with tentacles 25""" long.
These 10 polyps, which represent the dorso-lateral polyps,
are surrounded by 5 large lateral polyps (fig. 27, 7, 7,7,7, 7)
placed in a semicircle, and which quite unite with the lateral
polyps on the left side, and in this manner, the outer
polyp-ring is formed; which, upon the ventral surface alone, is
extremely little interrupted (fig. 27, b).
Of all the previously described forms, there is none,
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